PART 2 Video - Weird engine noise

[diyanich]

Originally Posted by schurikde

The 4.8 engine have no VANOS. It has Valvetronic. The noise in the video remember me on HVA ticking.

Look at this...

Hey,Vanos and Vavletronic are two different things and both are present in
e53 4.8is N62 B48 engine (Double Vanos and Valvetronic)

BMW N62 - Wikipedia, the free encyclopedia

Happy New Year!

[schurikde]

Originally Posted by diyanich

Hey,Vanos and Vavletronic are two different things and both are present in
e53 4.8is N62 B48 engine (Double Vanos and Valvetronic)

BMW N62 - Wikipedia, the free encyclopedia

Happy New Year!

hello.

this is wrong. you can have only the one or the other.

N62 engine e53 before facelift got VANOS.
N62 engine e53 after facelift got Valvetronic.

you can see this in bmw parts catalogue too.

[diyanich]

Originally Posted by schurikde

hello.

this is wrong. you can have only the one or the other.

N62 engine e53 before facelift got VANOS.
N62 engine e53 after facelift got Valvetronic.

you can see this in bmw parts catalogue too.

Anyway it's not quite correct IMO.
I still rely on Wiki in this one.

[imola38]

Lets see if we can clear this up.. The pre-facelift E53 uses the M62TU 4.4/4.6V8 with double VANOS. The 04> facelifted X5's use the N62/N62TU with Valvetronic which is a motor and lever system that's sole purpose is to infinitely vary the intake valve's lift and duration. They also utilize VANOS which varies cam timing.

I've always bought non Valvetronic M62 powered BMW's because of the relative simplicity of the valve train. I think intermediate levers and variable intake lift sound great on paper but in the real world of Heat cycles, high rpm, long service intervals etc, they dont hold up well over time. Thats an incredibly complex valve train in the N62 and im amazed it works as well as it does. I'm not surprised though that it makes a little extra noise here and there with all that hardware moving arond in there.

-Ben